Dioxin contamination in soils of Southern Vietnam
| Autor: | Thanh Vu Doan, Dominique Grandjean, Luiz Felippe De Alencastro, Joseph Tarradellas, Tuan Anh Mai |
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| Rok vydání: | 2007 |
| Předmět: |
Geologic Sediments
Polychlorinated Dibenzodioxins Time Factors Environmental Engineering Health Toxicology and Mutagenesis Food Contamination Fresh Water Dioxins Risk Assessment Food chain chemistry.chemical_compound Water Movements Industry Soil Pollutants Environmental Chemistry Cities Toxic equivalency factor Benzofurans Persistent organic pollutant Defoliants Chemical Geography Agent Orange Public Health Environmental and Occupational Health General Medicine General Chemistry Contamination Pollution Soil contamination Vietnam chemistry Environmental chemistry Environmental science Public Health Polychlorinated dibenzofurans Environmental Monitoring Food contaminant |
| Zdroj: | Chemosphere. 67:1802-1807 |
| ISSN: | 0045-6535 |
| DOI: | 10.1016/j.chemosphere.2006.05.086 |
| Popis: | Dioxin is the common name for polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs), and is abbreviated as PCDD/Fs. In the case of Southern Vietnam, is of high concern dioxin contamination in the areas affected by past-use chemical defoliants. Our study related to the zone considered as a "hot spot"--Bien Hoa Airbase and surrounding areas (Bien Hung Lake). Although the war ended over 30 years ago, the adverse effects on this territory still continue. Soil and sediment were selected for our research as they act as a sink for PCDD/Fs. The samples were taken and analyzed in CECOTOX laboratory following certified procedures. The total amounts of PCDD/Fs (2,3,7,8 related congeners) in the samples were converted into WHO-TEQ and compared with standard values proposed by Canadian environmental quality guidelines. The obtained data shows a relatively high risk (up to 20.4 times higher than (probable effect level) PEL value for sediment and 46 times higher than standard value for soil). The research is continuing on the assessment of dioxin transport in food chain. Moreover, considering the obtained data a complete solution should be found urgently to solve the problem of dioxin contamination in the studied areas. |
| Databáze: | OpenAIRE |
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